N.J. Stat. Ann. § 30:8-15.2

Any person now or hereafter holding such office, position or employment, who has been or shall be appointed for a full term of three years and after serving such full term shall be reappointed to such office, position or employment, shall, from and after his said reappointment, continue to hold such office, position or employment during good behavior and efficiency and shall not be removed therefrom except as provided in section one of this act.